Originally Posted by egbertnr
I was surprised by the results and still not real sure what to say with regards to the actual numbers. My truck would kick out on the stock tune at 4750 rpm, it did that on 4 different pulls in 4th gear. Not sure if it was a speed limiter or traction control. The Hp was still climbing so Id be curious to see if the results would have been different for the intake in the higher rpms.
I still love my AFE intake and think it allows the truck to breathe a lot better, but doesn't show the gains I thought. It was also very difficult to start pulls lower then 2000-2500, the truck would again to some odd things.
You might already know this but Motor Trend put one of those on a dyno back in their Oct. 2011 issue and they also mentioned the problems getting the truck to work right on the dyno. They ended up disconnecting the rear wheel speed sensor's. Something about the ecm wouldn't allow things to work right with the front wheels stationary.